# PanelEventArgs class

Namespace: [Rhino.UI](https://developer.rhino3d.com/api/rhinocommon/namespace/rhino.ui.md) · Assembly: [RhinoCommon](https://developer.rhino3d.com/api/rhinocommon/assembly/rhinocommon.md)

```cs
public class PanelEventArgs : EventArgs
```

Panels.Show event arguments

**Derived types:** [ShowPanelEventArgs](https://developer.rhino3d.com/api/rhinocommon/type/rhino.ui.showpaneleventargs.md)

## Constructors

- [PanelEventArgs](https://developer.rhino3d.com/api/rhinocommon/type/rhino.ui.paneleventargs/ctor.md)

## Properties

- [Document](https://developer.rhino3d.com/api/rhinocommon/type/rhino.ui.paneleventargs/document.md)
- [DocumentSerialNumber](https://developer.rhino3d.com/api/rhinocommon/type/rhino.ui.paneleventargs/documentserialnumber.md)
- [PanelId](https://developer.rhino3d.com/api/rhinocommon/type/rhino.ui.paneleventargs/panelid.md): Class Id for panel being shown or hidden